Process gas chromatograph RGC 704
You want to analyze the individual components of the gas composition of natural gas, biogas, gas from Power-2-Gas applications and their mixed gases? Our RGC 7 family - the new generation of the PGC - is available for this purpose. The gas components are processed in an analysis computer and used to calculate further values such as the calorific value, standard density, heating value and Wobbe index. A selection from the RGC 7 PGC family is approved for custody transfer by the PTB for the measurement of natural gas and biogas with the contents of O2 up to 3.8% and H2 up to 20%.
The PGC family of the RGC 7 is H2-Ready! The analyzer computer forms the digital interface for your continuously networked plant technology.
The PGC family of the RGC 7 is H2-Ready! The analyzer computer forms the digital interface for your continuously networked plant technology.
PTB approval for natural gas and biogas
State-of-the-art measuring unit
Display and storage of chromatograms
Calorific value calculation according to ISO 6976 and GPA 2172
Optimization of operating costs compared to the previous series
Remote access via Windows operating software
Gas chromatograph for measuring natural gas, biogas and mixed gas
The PGC family of the RGC 7 is a measurement update of the PGC 9300 family, which has now met the high requirements of customers and approval authorities for more than 10 years.
The first PGC in the RGC 7 family, the RGC 704, has had its PTB approval since July 2023 and is the legitimate successor to the PGC 9304. The RGC 704 has a hydrogen measuring range of up to 20 mol% and measures a total of 14 components.
The first PGC in the RGC 7 family, the RGC 704, has had its PTB approval since July 2023 and is the legitimate successor to the PGC 9304. The RGC 704 has a hydrogen measuring range of up to 20 mol% and measures a total of 14 components.
Gas Chromatographs:
- Models:
- RGC 704: for natural gas or biogas containing up to 20 mol% hydrogen and oxygen (14 components in total) - For measuring gas components (see table) and for calculating calorific value, standard density, heating value, Wobbe index, and density ratio
- The analysis system consists of the following components:
- Measurement unit with 3 column modules
- Ex-D enclosure, including stand and stream conditioning
- Analysis computer with archives - Calorific value calculation according to ISO 6976 and GPA 2172
- Automatic recalibration
- Multi-stream configuration for up to 2 gas streams
- RMGViewGC operating software (for MS Windows) with features such as
- Display, modification, and export of parameters
- Data log generation
- Display and saving of chromatograms
- PTB approval for natural gas and biogas
as well as natural gas with contents of O₂ up to 3.8% and H₂ up to 20%.
Gas chromatograph
| Carrier gas | Helium Argon |
| Inlet pressures | Carrier gas 4.5 bar, Measurement gas 1-2 bar |
| Analysis Calculator | 19" rack-mount unit, 3U (48 TE) Touchscreen Help texts for all parameters Freely programmable customer display and user archives for up to 20 values Digital and analog inputs for processing external signals (e.g., contact pressure gauges) and measured values (e.g., dew point) |
| Output signals | Ethernet Interface Serial interfaces DSfG interface according to DVGWG 485 Modbus interface Digital and analog outputs for transmitting any signals and values |
Measured components and measuring ranges
| Measuring range mol % | | extended natural gas PGC with 20mol% H2 (approved by PTB) |
|---|---|---|
| Columns | | 1 + 2 + 4 |
| Methane | C1 | ≥ 50 |
| Ethan | C2 | ≤ 15 |
| Propane | C3 | ≤ 15 |
| i-Butane | IC4 | ≤ 4 |
| neo-pentane | neoC5 | 0,1 |
| i-Pentane | IC5 | ≤ 0.5 |
| n-Pentane | NC5 | ≤ 0.5 |
| Hexane | C6+ | ≤ 0.3 |
| Carbon dioxide | CO2 | ≤ 20 |
| Nitrogen | N2 | ≤ 30 |
| Oxygen | O2 | ≤ 3,8 |
| Hydrogen | H2 | ≤ 20 |
| Helium | He | ≤ 0.36 |
| Carrier gas | Helium + Argon | |
| Calorific value 1) | Hs | 5,53 kWh/m³ - 14,0 kWh/m³ |
| Standard density 2) | ρb | 0.59 - 1.36 kg/m³ |
| Lorem | Lipsum | Lorem |
1) Tb=25°C, Tv=0°C, pv=pb=101,325 kPa
2) Tn=0°C, pn=101,325 kPa
2) Tn=0°C, pn=101,325 kPa
Technical Product Information & Software
RGC-7 EN
Product Informations, PDF (3.2 mb)
Operating cost comparison
RGC 704 - PGC 9300
RGC 704 - PGC 9300
PDF (1865 kb)
EU-DoC-RGC-704-2023-07-11-signed
EU Declaration of Conformity, PDF (175 kb)
Konformitätserklärung_RGC 704_2023-11-10
Declaration of Conformity, PDF (157 kb)
EU-DoC-RGC-704-2023-07-11-signed
Flyer, PDF (545 kb)
RGC 7
Technical data sheet (1.9 mb)
RMGViewGC-3.1.2
Software, zip (5.4mb)
Operating & maintenance instructions
RGC-7 EN
Measuring unit operating instructions, PDF (9.8 mb)
RGC-7 EN
Manual analytical computer, PDF (15.4 mb)
RGC-7 EN
Maintenance book, PDF (2,3mb)
RMG Modbus Interface
RGC 7-C
RGC 7-C
Parameter list, PDF (4.9 mb)
Do you have any questions about:
Process gas chromatograph RGC 704
Please contact us if you have any questions or need help. Our employees are always there for you.